2. Store Manager can export osCommerce customers to .csv file. You should enter the file name or select one (using browse ) to be replaced.

Also you can Save Export Settings for future osCommerce customers export or load one to use now.

3. Fields Delimiter page has some important settings. Check them to ensure proper configuration.

First option is delimiter character. Most popular delimiters are comma (,), semicolon (;) and tab character ( ), however other symbols can be used as well.

Export file is usually generated for further import. If
incorrect delimiter is specified during import, file will not be parsed
properly and the customers will not be imported. Second option is quote
string values. It is used to separate strings in CSV file.

4. Select fields you would like to export:

All available fields that can be exported are listed in left pane.
Select fields you want to export and click ">" button to move
them to right pane. If you'd like to export all fields simply press
">>". The order in which columns will be saved in .csv file can be
changed. To do this you can move exported columns up and down using
corresponding buttons.

5. Preview export file and proceed.

Choose which action to perform after saving export data. Use "None"
option and Wizard will be automatically closed. If you wish to open a
directory containing result file, check corresponding option. Open
result file option allows you to see export file in Excel.

Also you can Save Export Settings for future osCommerce customers export or load one.